Paul Kalkbrenner is a DJ, musician, and producer who became one of the leading lights on the German electronic music scene. Kalkbrenner was born in Leipzig in East Germany in 1977, and began studying the trumpet when he was eight. In 1989, as the Berlin Wall came down and East and West Germany were reunified, the East eagerly embraced new freedoms, and the electronic music scene was an unexpected beneficiary as people set out to express themselves and embrace the high-spirited nature of the music. Kalkbrenner had already begun performing at youth clubs in Leipzig by this time,...